Improvement in wrenches



A. E. LINDSLEY.

Wrenches.

10,148,965 Patented March24,1a74.

NITED STATE AARoN n. LINDsL'nY, on PAw PAw, MicnicAN.

IMPROVMENT IN WRENCHES.

Specification forming part of Letters Patent No. 148,965, dated March24, 1874; application led November 6, 1873.

To all whom it may concern:

Be it known that I, AARON E. LINnsLEY, of Paw Paw, in the county of VanBuren and State of Michigan, have invented certain new and usefulImprovements in Wrenches; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to theaccompanying drawings and to the letters of reference marked thereon,which form a part of this specification.

The nature of my invention consists in the construction and arrangementof a monkeywrench, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, in whichis shown. a longitudinal view of the wrench.

A represents the ordinary straight bar,with stationary jaw B and thehandle C. On the upper end of the handle is a ferrule, D,which screwslirmly upon the bar A. B represents the sliding' jaw, moving upon thebar A. This jaw is provided with a frame-work, E, also sliding on thebar A, and provided on the back of the said bar with a toothed orcorrugated face, a. In the under side, at the back end of the stationaryjaw B, is hinged a bar, G, which has a toothed or corrugated face, b, tolock with the face a of the sliding jaw. At its opposite end it isbeveled or sloped, as seen in the drawings, for the purpose ofpresenting a suitable surface to the eccentricdever to bear upon. Thisbar runs parallel with the bar A to the ferrule D, and serves to holdthe sliding jaw at any desirable point. The hinged bar also serves as abrace between the head or jaw B, where itv is hinged, and the ferrule,which is intended to greatly lessen the strain on the head and bar. Theferrule also answers for the purpose of holding the strain which may bemade upon the brace named above, and it is provided with a tenon orspur, 1,to which an eccentric, H, is pivoted. This eccentric oreccentric lever holds the hinged bar or brace in place to lock thesliding jaw at any given point on the bar, the hinged bar being forkedat its lower end, and straddling the tenon or spur d between theeccentric and the bar.

Having thus fully described my invention, what I claim `as new, anddesire to secure by Letters Patent, is-

l. The combination of the hinged bar G, constructed with an extendedbearing-surface, with the eecentriclever H, arranged to operatesubstantially as and for the purpose described.

2. The combination of sliding jaw B, with its extension, E, bar A,hinged bar G, and eccentric-lever H, all arranged substantially as andfor the purpose described.

In testimony that I claim the foregoing as my own I affix my signaturein presence of two witnesses.

AARON E. LINDSLEY.

Witnesses UHARLns E. GALLicAN, JAMES Mum.

